Watch video highlights from Saturday’s Democratic debate

Democratic U.S. presidential candidates Sanders and Clinton share a laugh at the start of a commercial break during the Democratic presidential candidates debate at St. Anselm College in Manchester (Reuters)

Saturday night’s Democratic presidential debate came across as the most fiery one yet, as the three candidates sparred in part over gun control and past foreign policy decisions. But there were also moments of unity, and perhaps none will get more attention than Vermont Sen. Bernie Sanders’ apology to former Secretary of State Hillary Clinton for…